APS1056IGV-1.8-T1 데이터 시트보기 (PDF) - Advanced Analogic Technologies

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APS1056IGV-1.8-T1

Fast Transient 600mA Step-Down Converter

Advanced Analogic Technologies 

APS1056

Fast Transient 600mA Step-Down Converter

General Description

The APS1056 SwitchReg is a member of

AnalogicTech's Total Power Management IC™

(TPMIC™) product family. It is a 1.4MHz step-

down converter with an input voltage range of 2.7V

to 5.5V and output voltage as low as 0.6V. It is opti-

mized to react quickly to a load variation.

The APS1056 is available in fixed voltage versions

with internal feedback and a programmable ver-

sion with external feedback resistors. It can deliver

600mA of load current while maintaining a low

27µA no load quiescent current. The 1.4MHz

switching frequency minimizes the size of external

components while keeping switching losses low.

The APS1056 is designed to maintain high effi-

ciency throughout the operating range, which is

critical for portable applications.

The APS1056 is available in a Pb-free SOT23-5

package and is rated over the -40°C to +85°C tem-

perature range.

Features

SwitchReg™

• VIN Range: 2.7V to 5.5V

• VOUT Fixed or Adjustable from 0.6V to VIN

• 27µA No Load Quiescent Current

• Up to 98% Efficiency

• 600mA Max Output Current

• 1.4MHz Switching Frequency

• 120µs Soft Start

• Fast Load Transient

• Over-Temperature Protection

• Current Limit Protection

• 100% Duty Cycle Low-Dropout Operation

• <1µA Shutdown Current

• SOT23-5 Package

• Temperature Range: -40°C to +85°C

Applications

• Cellular Phones

• Digital Cameras

• Handheld Instruments

• Microprocessor / DSP Core / IO Power

• PDAs and Handheld Computers

• USB Devices

Typical Application (Fixed Output Voltage)

VIN

C2

4.7µF

U1

APS1056

VIN

LX

EN

GND

OUT

VO

L1

4.7µH

C1

4.7µF

APS1056.2007.04.0.9 (PRELIMINARY INFORMATION)

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